A source of sound approaches an observer and the apparent frequency of sound heard by the observer is f. When the source remains stationary and the observer approaches the source with same velocity apparent frequency heard by the observer is $$15$$ $$f16$$. If velocity of sound in air is $$330$$ $$m/s$$, velocity of source is

Question

A source of sound approaches an observer and the apparent frequency of sound heard by the observer is f. When the source remains stationary and the observer approaches the source with same velocity apparent frequency heard by the observer is $$15$$ $$f16$$. If velocity of sound in air is $$330$$ $$m/s$$, velocity of source is

Infinity Learn · Accepted Answer

$$(2)when$$  source  is  moving,  $$f=f01$$−VVSwhen  observer  is  moving,  $$15f16=f01+VVS$$∴     $$15f16$$ $$1$$−$$VVS=1+VVS$$⇒   $$VVS2$$ $$=1$$−$$1516=116$$⇒  $$V=VS4=3304$$ $$m/s$$ $$=82.5$$  $$m/s$$

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